ZIP Code 77437 — El Campo, TX
77437 is a standard (street delivery) ZIP code serving El Campo, Texas, in Wharton County. To mail something here you only need these five digits — but the four-digit extension narrows delivery to a single point, and it is what USPS bulk postage discounts are priced on.
ZIP code 77437 at a glance
| ZIP code | 77437 |
|---|---|
| Primary city | El Campo |
| State | Texas (TX) |
| County | Wharton FIPS 48481 |
| ZIP type | Standard (street delivery) |
| Time zone | America/Chicago |
| Population | 18,238 |
| Coordinates | 29.204520, -96.273280 |
How ZIP+4 works in 77437
The four digits after the hyphen encode a delivery segment inside 77437. In practice one segment usually means:
- One side of one block — odd numbers on a street between two cross streets
- A single large building, or one floor of it
- A group of PO boxes, sometimes a single box
- A single business that receives enough mail to warrant its own code
That is why 77437 has no single ZIP+4: two neighbors across the street from each other usually have different ones. Enter a street address above and we will return the exact nine-digit code along with the standardized USPS address format.
Nearby ZIP codes
Showing the closest twelve. See every ZIP code within 25 miles of 77437.
| ZIP | City | Distance |
|---|---|---|
| 77467 | Pierce, TX | 5.6 mi |
| 77432 | Danevang, TX | 10.7 mi |
| 77455 | Louise, TX | 10.9 mi |
| 77443 | Glen Flora, TX | 11.9 mi |
| 77488 | Wharton, TX | 12.4 mi |
| 77436 | Egypt, TX | 12.9 mi |
| 77460 | Nada, TX | 14.9 mi |
| 77453 | Lane City, TX | 15.5 mi |
| 77458 | Midfield, TX | 17.3 mi |
| 77962 | Ganado, TX | 18.2 mi |
| 77448 | Hungerford, TX | 18.3 mi |
| 77456 | Markham, TX | 20 mi |
Questions about 77437
What is the ZIP+4 code for 77437?
77437 is the five-digit ZIP code. The ZIP+4 adds four more digits that identify a specific delivery point — usually one side of a city block, a single building, or a group of PO boxes. Because those four digits change from address to address within 77437, you need to look up a specific street address to get them.
What city is 77437?
77437 is assigned to El Campo, Texas, in Wharton County.
Do I need to use the ZIP+4?
It is optional for ordinary mail, but it speeds up sorting and it is required for most USPS bulk-mail postage discounts. Many address-verification and e-commerce systems also use ZIP+4 to confirm a delivery point exists.
Need thousands of these?
Upload a CSV and get ZIP+4, county, carrier route, and delivery-point data appended to every row — or call the API directly.